- The document discusses the pronunciation rules for adding "-ed" to regular verbs in English. - When a verb ends in a voiced sound like -d or -t, "-ed" is pronounced /-id/ as in "wanted" or "rested". - When a verb ends in an unvoiced sound like -r, -n, -i, or -l, "-ed" is pronounced /-d/ as in "answered" or "preferred". - For all other verbs, "-ed" is pronounced /-t/ as in "danced" or "missed".